Grain-separator and straw-carrier



C. VAN DERZEE.

Thrashing Machine.

No. 16,698. Patented Feb. 24, 1857,

r I I Inventor.

N ETEns. Pnuw-Lmw m ner. Wishingiam Dvc.

UNITED STATES PATNT OFFICE.

CORNELIUS VAN DERZEE.

OF ALBANY, NEW YORK.

GRAIN-SEPARATOR AND STRAW-CARRIER.

Specification of Letters Patent No.

To all whom it may concern:

Be it known that I, CORNELIUS VAN DER- znn, of the city of .Albany, State of New York, have invented a new Straw and Grain Separator to be used with Threshing-Hachines; and I declare the following specification, with the drawings hereto annexed as part of the same, to be a full and perfect de scription thereof.

Similar letters in the figures denote the same parts of the machine. Figure l represents a perspective view of the machine. Fig. 2 a cross section in the line of the lower frame. Fig. 3 is a diagram to show the mode of the operation of the separators.

Two side pieces of plank A A are supported on edge parallel with each other with a considerable space between them and in an inclined position, by two frames B and C, B being higher than C. Against the inner sides of A A lie long slats D, D, and equidistant from and between them a similar slat E. These slats extend nearly the whole length of the pieces A A. They have projecting from them horizontally at equal distances rungs or spokes b b from the side slats a a from the center slats.

The rungs of the side pieces project nearly to the center slat, and those of the center slat project across from both its sides nearly to the side slats, so that when the rungs are placed on one level they form a sort of ladder on which the straw can lie without easily dropping through. The lower edges of these slats are attached to a crank F, F, and G on shafts H, H, placed against the frames near the extremities of the slats.

The cranks F F are bent the reverse of G, so that when their motion carries the side slats down and toward frame Gr it carries the middle slat up and toward B and vice versa. The effect of these movements as shown in diagram, Fig. 3, where E represents a center slat with its rungs a, a, and D a side slat with its rungs b, b, and the circles drawn through each rung shows its orbit of 16,698, dated February 24, 1857.

movement as the slats are propelled by the cranks.

Now if the cranks be placed in a horizontal position allowing the rungs to be in range and the straw to be cleaned laid upon them, and the cranks then put in motion, in the direction of the arrow, as the rungs b, 6, rise and move half a circle from m to y they will carry the straw that distance, lifting it the height of the crank from w to z, leaving it at its original level. Then or, having taken the position of Z) in its turn repeats the operation. This being done by all the rungs simultaneously, the straw is at each successive half revolution of the cranks carried the height of the crank and moved along twice that distance. The up and down movement shaking out the grain, and the progressive movement delivering the straw out of the upper end of the machine.

To insure certainty and correspondence in the action of the two shafts, cranks K K at right angles to the other cranks are affixed to the outer end of the shafts H and connected by a rod L. A band pulley at the other end of one of the shafts can be used to apply motive power.

The arrangement may be raised by placing the center slat in a fixed position and giving the revolving motion to the side slats only, or vice versa but in that case it would re quire double the revolutions of the shafts and cranks to do the work of the other arrangement.

I clai.m

The method of agitating and moving the straw, for the purpose of separating the grain from it, by rungs or spokes rotating in connection with each other, or in reference to each others movements, substantially as set forth and described in the within specification.

C. VAN DERZEE. Witnesses:

RICHD. PARICK DE l/Vrr'r,

E. J. MiLLER. 

